MP Protein ID  sort | Molecule Page Name  sort | Functional Category  sort | Status  | Publication Date  sort |
| A000385 | B-Myb | Transcription factor | Unassigned | - |
| A000358 | Bad | Cytosolic, misc. | Unassigned | - |
| A002648 | Baff-R | Receptor, cytokine | Unassigned | - |
| A000359 | Bag1 | Adaptor/scaffold | Assigned | - |
| A001600 | Bag2 | Adaptor/scaffold | Assigned | - |
| A001601 | Bag3 | Adaptor/scaffold | Assigned | - |
| A001602 | Bag4 | Adaptor/scaffold | Assigned | - |
| A001604 | Bag5 | Adaptor/scaffold | Assigned | - |
| A000360 | Bak | Cytosolic, misc. | Assigned | - |
| A000361 | Bam32 | Adaptor/scaffold | Assigned | - |
| A000362 | Bap29 | Cell surface, misc. | Unassigned | - |
| A000363 | Bap31 | Cell surface, misc. | Unassigned | - |
| A002930 | BARD1 | Nuclear, misc. | Assigned | - |
| A003677 | Batf | Transcription factor | Assigned | - |
| A004124 | Batf2 | Transcription factor | Assigned | 4 Dec 2009 |
| A004125 | Batf3 | Transcription factor | Assigned | 8 Dec 2009 |
| A000364 | Bax | Cytosolic, misc. | Assigned | - |
| A000365 | Bcap | Adaptor/scaffold | Assigned | 27 Sep 2006 |
| A003896 | Bcap37 | Cell surface, misc. | Unassigned | - |
| A003001 | Bckdk | Enzyme, misc. | Unassigned | - |
| A000370 | Bcl-W | Cytosolic, misc. | Unassigned | - |
| A000371 | Bcl-X beta | Cytosolic, misc. | Unassigned | - |
| A000372 | Bcl-X gamma | Cytosolic, misc. | Unassigned | - |
| A000373 | Bcl-Xl | Cytosolic, misc. | Unassigned | - |
| A000366 | Bcl10 | Cytosolic, misc. | Assigned | 26 Jan 2005 |
| A000367 | Bcl2 | Cytosolic, misc. | Assigned | - |
| A000368 | Bcl3 | Cytosolic, misc. | Unassigned | - |
| A000369 | Bcl6 | Cytosolic, misc. | Assigned | - |
| A000374 | Bcma | Receptor, cytokine | Unassigned | - |
| A002835 | Bcr | GTPase activating protein, Rac/Rho | Assigned | - |
| A003242 | Beta-Parvin | Actin binding protein | Assigned | 1 Oct 2008 |
| A000377 | beta-Trcp | Ubiquitin conjugating system | Assigned | - |
| A002558 | Bid | Apoptosis | Unassigned | - |
| A000398 | Big1 | Guanine nucleotide exchange factor, ARF | Assigned | - |
| A003150 | Bike | Protein kinase, Ser/Thr (non-receptor) | Unassigned | - |
| A003035 | Biklk | Protein kinase, tyrosine (non-receptor) | Unassigned | - |
| A003649 | Bim | Apoptosis | Assigned | - |
| A000378 | Blc | Chemokine | Unassigned | - |
| A003268 | Blimp1 | DNA binding protein | Unassigned | - |
| A000380 | Blk | Protein kinase, tyrosine (non-receptor) | Assigned | - |
| A000381 | Blnk | Adaptor/scaffold | Assigned | - |
| A000383 | BLyS | Cytokine | Unassigned | - |
| A003020 | Bmpr2 | Receptor, Ser/Thr kinase | Unassigned | - |
| A000384 | Bmx | Protein kinase, tyrosine (non-receptor) | Unassigned | - |
| A000386 | Bnp | Secreted protein | Unassigned | - |
| A000387 | Bombesin receptor bb1 | Receptor, GPCR | Unassigned | - |
| A000388 | Bombesin receptor bb2 | Receptor, GPCR | Assigned | - |
| A000389 | Bombesin receptor bb3 | Receptor, GPCR | Unassigned | - |
| A000390 | Borg1 | Inhibitor protein | Assigned | - |
| A000391 | Borg2 | Inhibitor protein | Assigned | - |
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